Samlexpower SEC-1250UL Owner's Manual - Section 8 |
24 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 25
seCtIOn 8 |
Operation
SWitcHinG on / oFF
ThechargerisswitchedON/OFFwiththeilluminatedACinputpowerON/OFFswitch(9)
locatedontherearpaneloftheunit.TheswitchisilluminatedRedwhenswitchedON.
indicAtion oF noRMAl oPeRAtion And cHARGinG StAtUS
WhenthechargerisswitchedONwithoutanyload,thefanwillcomeonmomentarily
and switch off.Voltmeter(12)willindicatethevoltageattheterminalsofthecharger.
Ammeter(13)willindicatethecurrentbeingdrawnfromthecharger.Whenastand-
alonebatteryisbeingchargedandhaschargedfully,thecurrentwillbealmost0A.
WhenthechargerisincurrentlimitconditionduringtheStage1-BulkChargeStage
(“I”Phase)orStage2–AbsorptionStage(“Uo”Phase),thecurrentshownwillbefull
50AforSEC-1250Uland25AforSEC-2425A.
PoWeRinG otHeR dc loAdS
ThechargercanbeusedasapowersupplyorasaDCUPS(DCUninterruptiblePower
Supply.Forboththeseapplications,firstsetswitchesS1andS2ofDIPSwitchtoOFF
positiontosetthechargertoworkin2stagemode(Seeunder“DIPSwitchSetting”on
page21).
USinG tHe cHARGeR AS A PoWeR SUPPly
Touseasapowersupply,firstswitchofftheDCload.ConnecttheDCloadbetweenthe
commonNegativeterminalandoneofthe2Positiveterminals.Ensurethatthemaxi-
mumcurrentdrawnbytheDCloadisbelowthemaximumcurrentratingofthecharger.
Switch on the charger and then the DC load.
USinG tHe cHARGeR AS A dc UPS
InaDCUPS(UninterruptiblePowerSupply),thechargersimultaneouslypowerstheDC
loadaswellasthebattery.AslongastheACpowertothechargerisavailableandthe
chargerisworkingnormally,thechargerwillsupplytheDCloadaswellascharge/float
thebattery.IncasetheACpowerfailsorifthechargerstopsworking,thebatterywill
automaticallypowertheDCload.AssoonastheACpowertothechargerisrestored,
the DC load will once again be fed by the charger and at the same time the battery will
be recharged.
!
cAUtion!
Please ensure that the sum of the current drawn by the DC load and the
currentdesiredforchargingthebatteryislessthanthemaximumcurrentcapacityofthe
charger.
TouseasaDCUPS,firstswitchOFFtheDCloadandconnectittothebattery.Now
connectthebatterytothechargerasexplainedaboveunder.Switchonthecharger
andthenswitchontheDCload.Foroperationinthismode,setswitchesS1&S2ofDIP
switchesmarkedMode(7)toOFFfor"BatterywithLoad"application(Seeunder“DIP
SwitchSetting”onpage21).